Shaving device



' Feb., 3g. N42, l J. A. c. GALA/Ao SHAVING DEVICE Filed June 28, 1958 l y INVEI`1 dost-PH Ac, @Az

' BY f fh 1Q@ #-MM/QQY ATToRN S Patented Feb. 3, 1942 UNITED STATES PATENT OFFICE 4 Claims.

My present invention relates to shaving devices and more particularly to devices of the general character indicated known as electric shavers and aims to provide a device which is simple in construction, easy and economical to fabricate, assemble and operate and admirably adapted to perform the functions as hereinafter more fully described.

In the accompanying specification, I shall describe. and in the annexed drawing show, an illustrative embodiment of the shaving device of the present invention. It is however to be clearly understood, that I do not wish to be limited to the exact details of construction herein shown and described for purposes of illustration only.

In the accompanying drawing,

Fig. 1 is a side elevational view of the aforesaid illustrative embodiment of the present invention having the outer cutting member partially broken away to show the inner construction.

F18. 2 is a transverse sectional view line 2-2 of Fig. 1.

Fig. 3 is a sectional view showing the manner of anchoring one end of the cutting blade.

Fig. e is an end view showing the manner of anchoring the other end of the cutting blade.

Fig. 5 is an enlarged fragmentary longitudinal sectional view showing the relationship between the inner and outer cutting members; and

Fig. 6 is a plan view of a cutting blade adapted in be used in connection with the aforesaid illustrative embodiment of the present invention.

Referring now more in detail to the aforesaid illustrative embodiment of the present invention and with particular reference to the drawing illustrating the same, the numeral I generally designates a casing preferably shaped so as to be conveniently gripped in the hand of the user and adapted to house' an electric motor the current to winch is supplied through a cable il and which may be started in the conventional manner by means o! a starting wheel i2, extending through the 'outer wall of the casing.

The shaft Il of the motor is elongated and has amxed thereon, by means of a set screw Ila, a cylindrical core Il having formed thereon the helical lands i which are stepped as at il to provide a guiding shoulder I1.

Adjacent the outer end of the core, I provide a pin I8 and adjacent the inner end oi' the core I provide a catch i9.

In Fig. 6 of the drawing, I have shown a blade 2l provided with a cutting edge 2l, the blade taken on resilient and ilexible and easily formed into a helix. At one end of the blade 20 I provide an opening 22 by means of which that end of the blade is fastened to the pin I8 after which the blade is wrapped about the lands l5 of the core I4 and the opposite end is anchored to the catch I9 by means of the key slot 23.

When the blade 20 is in position about the core i4 its inherent resilient and iiexible character causes it to expand so as to present a space 25 between its inner surface and the step i6. An outer cutting member 26` consisting of a cylindrical casing is slid over the blade 20and is aiiixed to the casing l0 by means of a threaded portion 21. The cutting member 28 is provided with the staggered slots 28.

This completes the description of the aforesaid illustrative embodiment of the present invention. The mode of use thereof may be briefly summarized as follows:

The character of the blade 20 is such that when it is formed into a helix its diameter is greater than the diameter oi the outer cutting member 26. Therefore when the outer cutting member is aflixed to the casing Il over the blade 20, the latter, due to its own resilience and flexibility, closely contacts the outer cutter so that when the hairs enter the slots 28, such hairs are clipped as closely as possible to the innersurface ot the outer cutter, thus enabling a closer shave than has been heretofore possible.

Other objects and advantages of the device of the present invention will readily occur to those skilled in the art to which the present invention relates.

WhatlI claim as my invention is:

1. In `an electric shaver, an inner rotatable member; an outer cutting member; a circumferentially expansible helical inner cutting member secured to the inner rotatable member, vnormally in shearing contact with the outer cutting member, supported at spaced points on the inner rotatable member, and spaced therefrom intermediate the points of support; and guiding means on said inner rotatable member to maintain the coils of said helical inner cutting member in proper spaced relationship from each other.

2. In an electric shaver, an inner rotatable member; an outer cutting member; a circumferentially expansible helical inner cutting member secured to the inner rotatable member, normally in shearing contact with the outer cutting member, supported at spaced points on the inner rotatable member at the ends of the inner cutbeing made of wafer-thin sheet steel so as to be v ting member, and spacedtherefrom intermediate coils of said helical inner cutting member in proper spaced relationship from each other.

4. In an electric shaver, an inner rotatable member provided with seats arranged in helical formation; an outer cutting member; and an expansible inner cutting member, secured to the inner rotatable member and guided by said seats normally in shearing contact with the outer cutting member, supported at spaced points on the inner rotatable member, and spaced therefrom intermediate the points of support.

JOSEPH A. C. GALVAO 

